EP 2942409 B1 20171025 - VALUABLE-METAL EXTRACTION METHOD
Title (en)
VALUABLE-METAL EXTRACTION METHOD
Title (de)
EXTRAKTIONSVERFAHREN FÜR EDELMETALL
Title (fr)
PROCÉDÉ D'EXTRACTION DE MÉTAUX DE VALEUR
Publication
Application
Priority
- JP 2013054878 A 20130318
- JP 2014056557 W 20140312
Abstract (en)
[origin: EP2942409A1] In order to selectively extract copper and/or lead from an acidic solution containing high concentrations of manganese, etc., the valuable-metal extracting agent of the present invention is expressed by general formula (1). In the formula, R 1 and R 2 each represent the same or different alkyl groups, R 3 represents a hydrogen atom or an alkyl group, and R 4 represents a hydrogen atom or a given group, other than an amino group, that bonds with an ± carbon as an amino acid. In general formula (1), the inclusion of a glycine unit, a histidine unit, a lysine unit, an asparagine acid unit, or a normal methylglycine unit is preferred. When using the extracting agent to extract copper/and lead, it is preferable that the pH of the acidic solution be adjusted to 1.0-5.5 inclusive.
IPC 8 full level
C22B 3/26 (2006.01); C22B 13/00 (2006.01); C22B 15/00 (2006.01)
CPC (source: EP US)
C22B 3/20 (2013.01 - US); C22B 3/26 (2021.05 - EP US); C22B 13/04 (2013.01 - EP US); C22B 15/0063 (2013.01 - EP US); C22B 15/0089 (2013.01 - US); Y02P 10/20 (2015.11 - EP US); Y02W 30/84 (2015.05 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2942409 A1 20151111; EP 2942409 A4 20160316; EP 2942409 B1 20171025; AU 2014239753 A1 20150924; AU 2014239753 B2 20151001; CA 2900928 A1 20140925; CA 2900928 C 20160209; CN 104995319 A 20151021; CN 104995319 B 20161019; JP 2014181355 A 20140929; JP 5595543 B1 20140924; PH 12015501746 A1 20151019; PH 12015501746 B1 20151019; US 2015376734 A1 20151231; US 9493857 B2 20161115; WO 2014148339 A1 20140925
DOCDB simple family (application)
EP 14767441 A 20140312; AU 2014239753 A 20140312; CA 2900928 A 20140312; CN 201480009250 A 20140312; JP 2013054878 A 20130318; JP 2014056557 W 20140312; PH 12015501746 A 20150807; US 201414765272 A 20140312